Rubus hispidus L.
Common Name: SWAMP DEWBERRY
Coefficient of Conservatism: 4
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Nt Shrub

Usually in moist, shaded places: moist thickets, swamps (coniferous or deciduous), borders of bogs and marshes; occasionally in dry forests, in acid soil.

Once the prostrate or trailing habit is known, this complex is easily distinguished from the R. flagellaris complex, which shares the habit but has strong, broad-based prickles (sometimes sparse), basically deciduous, thin, ± dull leaves with more acute or acuminate leaflets, and larger flowers. In R. hispidus the leaves are firm-textured and evergreen with mostly obovate leaflets, usually ± glossy when fresh but duller and darkish green when dry. The inflorescence in both complexes is few-flowered, the pedicels usually ± strongly ascending. The longest prickles in R. hispidus are often ca. 1.5 times as long as the diameter of the cane where they arise, so even if slightly broad-based they are noticeably slender and elongate; in the R. flagellaris complex, the prickles have broad bases and are at most ca. 1.2 times as long as the diameter of the cane.

The inflorescence in R. hispidus is only rarely glandular, and then only sparsely so. In the R. flagellaris complex the inflorescence is frequently glandular and in the R. setosus complex it is usually distinctly glandular-bristly. The latter has a broader inflorescence than R. hispidus.

Locations

Allegan County
Antrim County
Arenac County
Barry County
Benzie County
Berrien County
Calhoun County
Cass County
Charlevoix County
Cheboygan County
Crawford County
Delta County
Dickinson County
Emmet County
Gladwin County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Huron County
Ingham County
Iosco County
Kalamazoo County
Kalkaska County
Kent County
Lake County
Leelanau County
Lenawee County
Livingston County
Mackinac County
Manistee County
Mason County
Mecosta County
Menominee County
Midland County
Monroe County
Muskegon County
Newaygo County
Oakland County
Oscoda County
Ottawa County
Presque Isle County
Roscommon County
Saginaw County
Sanilac County
Schoolcraft County
St. Clair County
St. Joseph County
Van Buren County
Washtenaw County
Wayne County
Wexford County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 16, 2017. http://michiganflora.net/species.aspx?id=2557.